What is 180° mandrel bent elbow?

180° Mandrel Bent Elbows are pipe fittings that change the direction of the pipeline in the pipeline system. Since the angles are 180°, it also called return bends or U bends. Including U bend elbow with straight section and Jumper elbow.

The small radius elbow refers to the relatively small bending radius, and the relative bending radius is close to or smaller than 1d elbow. The 180° mandrel bent elbow is bent by cold simmering. The applicable media for 180° elbows are gas, liquid, and steam. Return elbows are mainly used in various large-scale projects such as petroleum, chemical industry, electric power, construction, and water conservancy. The product quality meets the export and implementation standards of high-pressure pipe fittings.

Short radius elbow; 180° mandrel bent elbow; jumper elbow

180° mandrel bent elbow classification:

1. The 180° mandrel bent elbow bend by the tube or pipes

Carbon Steel: ASTM/ASME A/SA179 A/SA192 A/SA210

Alloys Steel: ASTM/ASME A/SA213 A/SA334 A/SA335

Stainless Steel: ASTM/ASME A/SA213

Aluminum alloy 3003, 6061, copper, copper, brass

2. According to the production method of 180° mandrel bent elbow , it mainly cold bend.

3. According to the radius of curvature of the elbow: it can be divided into long radius elbow and short radius elbow. A long radius elbow means that its radius of curvature is equal to 1.5 times the outer diameter of the pipe, that is, R=1.5D; a short radius elbow means that its radius of curvature is equal to the outer diameter of the pipe, that is, R=1.0D. (D is the diameter of the elbow, R is the radius of curvature).

4. According to the elbow pressure grade: there are about seventeen kinds, which are the same as the American pipe standards, including: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS; STD and XS are the most commonly used.

Special type of 180° mandrel bent elbow:

1. U bend elbow with straight section, which can convience welded the elbow with other tubes.

2. Jumper elbow

Return Bends